This IS a common thing in my experience. 2/3 of my brothers pretend to be. I used to work with 14 guys, and 9 of them were nonchalant. I used to claim friendship with many until it was just too hard to have conversations with them all the time. Even in here, I left my DMs open from a post I made and nearly all conversations I had were as pointless as possible. Fuck am I supposed to say when there is nothing brought to the convo